A film pressing device and a battery film attaching apparatus

Abstract

The utility model discloses a kind of pressing film device and battery film attaching equipment, belong to battery technical field, including press push plate, the stroke detector for obtaining the displacement length information of film material, pressure mould mechanism, film cutting mechanism and controller, the pressure mould mechanism includes the pressure mould drive assembly installed in the press push plate, and the glue pressing rod connected with the pressure mould drive assembly, the pressure mould drive assembly drives the glue pressing rod close to or away from the press push plate;The film cutting mechanism includes film cutting drive assembly, and the cutter for cutting the film material between the glue pressing rod and the press push plate, the glue pressing rod is located between the cutter and the stroke detector;The controller is connected with the stroke detector, the pressure mould drive assembly and the film cutting drive assembly respectively.The utility model reaches in battery insulation film coating process can improve production efficiency and the stability of cutting quality, is favorable to the technical effect of improving the quality of pasting glue.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and specifically relates to a film pressing device and a battery film attaching equipment. Background Technology

[0002] In the manufacturing process of square lithium-ion batteries, an insulating film coating process is required to insulate the battery cell from the external metal casing, thereby improving battery safety and enhancing the aesthetics of the packaging. In this process, the precise cutting and application of the adhesive film to the correct length is crucial, directly impacting the subsequent adhesive application and battery yield. Currently, the adhesive film is typically cut manually. Operators manually pull the adhesive film strip, visually estimate the cutting length, or use simple measuring tools to determine the cutting length, then cut it with a manual cutter or scissors, and finally manually apply the cut film to the battery surface. However, this manual method is highly dependent on the operator's skill level and work condition, resulting in low cutting efficiency and poor cutting accuracy and consistency. Large dimensional deviations in the adhesive film are common, affecting the subsequent adhesive application positioning accuracy and leading to low battery yield. Furthermore, manually cut edges are prone to burrs or unevenness, causing wrinkles or bubbles during application, which weakens insulation performance and poses safety hazards.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is the low production efficiency, unstable cutting quality, and difficulty in improving the adhesive quality in the battery insulating film coating process.

[0005] To solve the above-mentioned technical problems, this utility model provides a film pressing device, which includes a pressing plate, a stroke detector for acquiring displacement length information of the film material, a pressing mechanism, a film cutting mechanism, and a controller. The pressing mechanism includes a pressing drive assembly mounted on the pressing plate and a pressing rod connected to the pressing drive assembly. The pressing drive assembly drives the pressing rod to move closer to or away from the pressing plate. The film cutting mechanism includes a film cutting drive assembly and a cutter for cutting the film material passing through the pressing rod and the pressing plate. The pressing rod is located between the cutter and the stroke detector. The controller is connected to the stroke detector, the pressing drive assembly, and the film cutting drive assembly.

[0006] Optionally, the molding mechanism further includes a first bracket with a first limiting groove and a second bracket with a second limiting groove. The first bracket and the second bracket are respectively mounted on the pressing plate and are arranged at intervals. The first limiting groove and the second limiting groove both extend in a direction close to the pressing plate. One end of the pressing rod passes through the first limiting groove and is connected to the molding drive assembly, and the other end of the pressing rod passes through the second limiting groove.

[0007] Optionally, the pressing device further includes bushings provided in the first limiting groove and the second limiting groove, and the bushings are provided with a clearance fit with the pressing rod.

[0008] Optionally, the film cutting drive assembly further includes a fixed base mounted on the pressure plate, a film cutting driver mounted on the fixed base, and a guide rail mounted on the fixed base. The push rod of the film cutting driver passes through the fixed base and is connected to the cutter. The cutter is slidably connected to the guide rail.

[0009] Optionally, the stroke detector includes a support frame mounted on the pressure plate and a CCD vision inspection module mounted on the support frame, wherein the CCD vision inspection module is used to monitor the displacement length information of the membrane material in real time.

[0010] Optionally, the controller includes a data receiving unit and a data processing unit. The data receiving unit is used to receive displacement length information acquired by the stroke detector. The data processing unit is used to compare the displacement length information with a preset standard length value. If the displacement length information meets the preset standard length value, the controller controls the pressing mold driving assembly to drive the pressing rod to press the film material onto the pressing plate, and controls the film cutting driving assembly to drive the cutter to cut the film material at preset intervals.

[0011] Optionally, the controller further includes a human-machine interface for receiving standard length values ​​and interval times input by the operator.

[0012] Optionally, the pressing plate includes a support plate with a support surface parallel to the pressing rod, and the stroke detector is mounted on the support surface.

[0013] Optionally, the cross-section of the pressure rod is square, and the surface of the pressure rod is provided with an elastic rubber pad.

[0014] According to another aspect of the present invention, the present invention also provides a battery film attaching device, the battery film attaching device including the aforementioned film pressing device.

[0015] Beneficial effects: This invention provides a film pressing device. A stroke detector acquires the displacement length information of the film material. In the pressing mechanism, a pressing drive assembly is mounted on a pressing plate, and a pressing rod is connected to the pressing drive assembly. The pressing drive assembly drives the pressing rod to move closer to or away from the pressing plate. In the film cutting mechanism, a film cutter is used to cut the film material passing through the pressing rod and the pressing plate. The pressing rod is located between the cutter and the stroke detector. A controller is connected to the stroke detector, the pressing drive assembly, and the film cutting drive assembly. Thus, during the battery insulating film coating process, the stroke detector acquires the displacement length information of the film material and transmits it to the controller. Based on the received film material displacement length information, the controller controls the pressing drive assembly to drive the pressing rod closer to the pressing plate to press the film material. After pressing the film material, the controller then controls the film cutting drive assembly to drive the cutter to cut the film material passing through the pressing rod and the pressing plate. This allows for precise detection of membrane displacement length, membrane pressing, and timely membrane cutting, which improves production efficiency and cutting quality stability in the battery insulation film coating process, as well as enhancing adhesive application quality. Ultimately, this achieves the technical benefits of improved production efficiency, cutting quality stability, and enhanced adhesive application quality in the battery insulation film coating process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a film pressing device provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the membrane material in a membrane pressing device provided in an embodiment of the present invention.

[0019] Figure 3 This is a structural block diagram of a controller, stroke detector, die driving assembly, and film cutting driving assembly in a film pressing device provided for an embodiment of the present utility model.

[0020] Figure 4 This is a structural block diagram of a data receiving unit, a data processing unit, and a human-machine interface in a film pressing device provided for an embodiment of the present invention. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0024] In this specification, references such as "one embodiment" or "some embodiments" mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the terms "comprising," "including," "having," and variations thereof in this specification all mean "including but not limited to," unless otherwise specifically emphasized. It should be noted that in the embodiments of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0025] It should be noted that, in the embodiments of this utility model, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. Furthermore, in the embodiments of this application, "connection" can also be understood as an electrical connection; the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this utility model are for illustrative purposes only and are not intended to limit the utility model.

[0026] This utility model provides a film pressing device, please refer to Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the structure of a film pressing device provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the membrane material structure in a membrane pressing device provided by an embodiment of this utility model. Figure 3 This is a structural block diagram of the controller, stroke detector, die driving assembly, and film cutting driving assembly in a film pressing device according to an embodiment of the present invention. Figure 4 This is a structural block diagram of a data receiving unit, a data processing unit, and a human-machine interface in a film pressing device provided by an embodiment of the present invention. The film pressing device provided by this embodiment of the present invention includes a pressing plate 1, a stroke detector 2, a pressing mechanism 3, a film cutting mechanism 4, and a controller 5. The stroke detector 2 is used to acquire displacement length information of the film material 7. The pressing mechanism 3 includes a pressing drive assembly 31 and a pressing rod 32. The pressing drive assembly 31 is mounted on the pressing plate 1, and the pressing rod 32 is connected to the pressing drive assembly 31. The pressing drive assembly 31 drives the pressing rod 32 to move closer to or away from the pressing plate 1. The film cutting mechanism 4 includes a film cutting drive assembly 41 and a cutter 42. The cutter 42 is used to cut the film material 7 that passes through the pressing rod 32 and the pressing plate 1, that is, the cutter 42 is used to cut the film material 7 pressed onto the pressing plate 1 by the pressing rod 32. The pressing rod 32 is located between the cutter 42 and the stroke detector 2. The controller 5 is connected to the stroke detector 2, the pressing drive assembly 31, and the film cutting drive assembly 41 respectively.

[0027] During the process of conveying the membrane material 7 above the pressure plate 1, the stroke detector 2 monitors and acquires the displacement length information of the membrane material 7 in real time. The displacement length information can include the forward distance and forward speed of the membrane material 7. The stroke detector 2 can transmit the acquired displacement length information of the membrane material 7 to the controller 5 in real time. The controller 5 can include a programmable logic controller or an industrial computer. When the controller 5 determines that the membrane material 7 has reached the preset position based on the received displacement length information of the membrane material 7, it will issue a command to control the start of the pressing mold drive assembly 31. The pressing mold drive assembly 31 can include a pneumatic cylinder or a servo motor system. The pressing mold drive assembly 31 can drive the pressure rod 32 to move downward and approach the pressure plate 1 to press the membrane material 7. After pressing is completed, the controller 5 issues a command to control the start of the film cutting drive assembly 41, which drives the cutter 42 to cut the membrane material 7 that passes between the pressure rod 32 and the pressure plate 1. The cutter 42 can be made of a high-hardness alloy material to ensure that the cut edge is neat and burr-free. In addition, during the cutting process, the movement trajectory, speed and pressure of the cutter 42 can also be controlled by the controller 5 to adapt to the cutting requirements of different types of membrane materials 7.

[0028] The pressing drive assembly 31 may include a cylinder, with the piston rod of the cylinder fixedly connected to the pressing rod 32. The cylinder's air inlet and outlet are connected to an air source via solenoid valves, which are controlled by the controller 5 to control the movement of the pressing rod 32. The film cutting drive assembly 41 may employ a linear module, such as one including a servo motor and a slider mechanism. The cutter 42 is mounted on the slider, and the rotation of the servo motor is converted into linear motion of the slider via a lead screw and nut pair, driving the cutter 42 to perform the cutting operation. The controller 5 can control the servo motor's speed, acceleration / deceleration parameters, and movement position. In practical applications, by replacing the pressing rod 32 with different shapes, the pressing and cutting of battery insulating films of different specifications can be achieved, improving adaptability and flexibility.

[0029] In this embodiment, the displacement length information of the film material 7 is obtained through the stroke detector 2. In the molding mechanism 3, the molding drive assembly 31 is mounted on the pressure plate 1, and the adhesive rod 32 is connected to the molding drive assembly 31. The molding drive assembly 31 drives the adhesive rod 32 to move closer to or away from the pressure plate 1. In the film cutting mechanism 4, the cutter 42 of the film material 7 is used to cut the film material 7 that passes through the adhesive rod 32 and the pressure plate 1. The adhesive rod 32 is located between the cutter 42 and the stroke detector 2. The controller 5 is connected to the stroke detector 2, the molding drive assembly 31, and the film cutting drive assembly 41 respectively. Thus, during the battery insulating film coating process, the stroke detector 2 obtains the displacement length information of the film material 7 and transmits the displacement length information to the controller 5. The controller 5 controls the molding drive assembly 31 to drive the adhesive rod 32 closer to the pressure plate 1 to press the film material 7. Then, the controller 5 controls the film cutting drive assembly 41 to drive the cutter 42 to cut the film material 7 that passes through the adhesive rod 32 and the pressure plate 1. This allows for precise detection of the displacement length of the membrane 7, pressing of the membrane 7, and timely cutting of the membrane 7. This improves production efficiency and the stability of cutting quality in the battery insulation film coating process, and enhances adhesive application quality. Ultimately, this achieves the technical effect of improving production efficiency and cutting quality stability in the battery insulation film coating process, and improving adhesive application quality.

[0030] In one embodiment, the molding device provided by this utility model includes a first support 33 and a second support 34. The first support 33 has a first limiting groove 331, and the second support 34 has a second limiting groove 341. The first support 33 and the second support 34 are respectively mounted on the pressing plate 1, and the first support 33 and the second support 34 are arranged at intervals. The first limiting groove 331 and the second limiting groove 341 both extend along the direction close to the pressing plate 1. One end of the pressing rod 32 passes through the first limiting groove 331 and is connected to the molding drive assembly 31, and the other end of the pressing rod 32 passes through the second limiting groove 341. The first bracket 33 and the second bracket 34 form a bidirectional support structure for the pressure rod 32. Since the first limiting groove 331 and the second limiting groove 341 both extend in the direction close to the pressure plate 1, when the pressure rod 32 moves under the drive of the mold driving assembly 31, the first limiting groove 331 and the second limiting groove 341 can guide and limit the pressure rod 32, so that the pressure rod 32 can only move in the direction perpendicular to the pressure plate 1. This effectively prevents the pressure rod 32 from deviating or shaking during the movement, that is, it can maintain a stable movement trajectory when the pressure rod 32 presses the film material 7, so that the pressure applied by the pressure rod 32 to the film material 7 is uniform and consistent, which is beneficial to improving the quality and accuracy of the film material 7 pressing, and at the same time reducing the situation of uneven or insufficient pressing of the film material 7 due to the unstable movement of the pressure rod 32.

[0031] In some embodiments, the pressing device provided by this utility model further includes a bushing 6, which is respectively disposed in the first limiting groove 331 and the second limiting groove 341. A clearance fit is provided between the bushing 6 and the pressing rod 32. The bushing 6 may include a sleeve made of wear-resistant material. The bushing 6 is installed in the limiting groove, and the bushing 6 and the pressing rod 32 can form a sliding contact surface. Using the bushing 6 as a buffer layer can reduce the wear generated when the pressing rod 32 directly contacts the limiting groove, which is beneficial to extending the service life of the pressing rod 32 and the bracket. Furthermore, the bushing 6 can also reduce the frictional resistance during the movement of the pressing rod 32, making the movement of the pressing rod 32 smoother. The clearance fit between the bushing 6 and the pressing rod 32 allows for a small adjustment space during the movement of the pressing rod 32, reducing jamming caused by manufacturing or installation errors. The aforementioned clearance fit refers to the inner diameter of the bushing 6 being slightly larger than the outer diameter of the pressure rod 32, with a certain gap between the bushing 6 and the pressure rod 32. This ensures that the pressure rod 32 will not jam due to excessive tightness or wobble due to excessive looseness during movement. When the mold drive assembly 31 drives the pressure rod 32, the pressure rod 32 is guided and supported by the bushing 6, allowing it to move with less resistance and improving the reliability and consistency of the pressing process.

[0032] In some embodiments, the film-cutting drive assembly 41 of the film-pressing device provided by this utility model further includes a fixed base 411, a film-cutting driver 412, and a guide rail. The fixed base 411 is mounted on the pressure plate 1, the film-cutting driver 412 is mounted on the fixed base 411, and the push rod of the film-cutting driver 412 passes through the fixed base 411 and is connected to the cutter 42. The guide rail is mounted on the fixed base 411, and the cutter 42 is slidably connected to the guide rail. Those skilled in the art will understand that the specific structure of the push rod in the film-pressing device provided by this utility model is not limited; it is only necessary to enable the film-cutting driver 412 to push the cutter 42 to move via the push rod. The fixed base 411 can be mounted on the pressure plate 1 to provide support for the film-cutting driver 412 and the guide rail. Those skilled in the art will understand that the specific structure of the guide rail in the film pressing device provided in this embodiment of the present invention is not limited. It is only necessary to achieve a sliding connection between the cutter 42 and the guide rail. For example, the guide rail can pass through a through hole at one end of the cutter 42, allowing the cutter 42 to slide on the guide rail. Alternatively, the cutter 42 can be slidably connected to the guide rail via a slider. During the movement of the cutter 42 by the film cutting driver 412 via a push rod, the cutter 42 moves along the length of the guide rail. The push rod of the film cutting driver 412 passes through the fixed base 411 and connects to the cutter 42, forming a power transmission path. The sliding connection between the cutter 42 and the guide rail can form a motion guiding mechanism, allowing the cutter 42 to move linearly along the guide rail under the drive of the film cutting driver 412. This improves the straightness and stability of the cutter 42's movement, prevents the cutter 42 from deviating or vibrating during movement, and improves the accuracy of the cutting line and the flatness of the cutting surface. When the travel detector 2 acquires the displacement length information of the membrane material 7 and transmits it to the controller 5, the controller 5 controls the pressing mold drive assembly 31 to drive the pressing rod 32 to press the membrane material 7 according to the received information. After pressing, the controller 5 then controls the film cutting driver 412 in the film cutting drive assembly 41 to push the cutter 42 to move along the guide rail to cut the membrane material 7 that passes between the pressing rod 32 and the pressing plate 1. Sliding the guide rail and the cutter 42 not only improves the stability and accuracy of the cutter 42's movement, but also helps to reduce the frictional resistance of the cutter 42's movement, reduce the burden on the film cutting driver 412, extend its service life, and facilitate the replacement and maintenance of the cutter 42, thus improving maintainability.

[0033] In some embodiments, the travel detector 2 in the film pressing device provided by this utility model includes a support frame 21 and a CCD vision inspection module 22. The support frame 21 is mounted on the pressing plate 1, and the CCD vision inspection module 22 is mounted on the support frame 21. The CCD vision inspection module 22 is used to monitor the displacement length of the film material 7 in real time. The support frame 21 provides support for the CCD vision inspection module 22. The optical field of view of the CCD vision inspection module 22 can cover the movement area of ​​the film material 7, such as by capturing feature points or marks on the film material 7, and calculating the displacement length of the film material 7 in real time. When the film material 7 moves under the drive of the conveying system, the CCD vision inspection module 22 continuously acquires images of the film material 7, identifies feature points or marks on the film material 7, calculates the real-time displacement length information of the film material 7, and transmits the above information to the controller 5. The controller 5 determines whether the film material 7 has reached the preset position based on the received displacement length information, and then controls the pressing mold drive assembly 31 to drive the pressing rod 32 to press the film material 7. At certain intervals, the controller controls the film cutting drive assembly 41 to drive the cutter 42 to cut the film material 7. This enables high-precision detection of the displacement length of the film material 7, providing accurate position information for subsequent pressing and cutting operations, which is beneficial to improving the pressing quality and cutting quality in the battery insulating film coating process.

[0034] In some embodiments, the controller 5 of the film pressing device provided by this utility model includes a data receiving unit 51 and a data processing unit 52. The data receiving unit 51 receives displacement length information acquired by the stroke detector 2, and the data processing unit 52 compares the displacement length information with a preset standard length value. If the displacement length information meets the preset standard length value, the controller controls the pressing mold drive assembly 31 to drive the pressing rod 32 to press the film material 7 onto the pressing plate 1, and controls the film cutting drive assembly 41 to drive the cutter 42 to cut the film material 7 at preset intervals. That is, the data receiving unit 51 of the controller 5 receives the displacement length information of the film material 7 acquired by the stroke detector 2, such as the CCD vision inspection module 22. The above information can be transmitted to the data receiving unit 51 through the data transmission interface, improving the real-time performance and accuracy of information transmission. The data processing unit 52 receives the displacement length information from the data receiving unit 51 and compares the displacement length information with a preset standard length value. The standard length value can be an ideal displacement length preset according to the specifications and process requirements of the battery insulating film. When the data processing unit 52 determines that the actual displacement length information conforms to the preset standard length value, such as when the actual displacement length information is equal to the preset standard length value or within the allowable error range of the standard length value, the data processing unit 52 will send a control signal to control the pressing mold drive assembly 31 to drive the pressing rod 32 to press the film material 7 onto the pressing plate 1, completing the pressing operation of the film material 7. After the pressing operation is completed, the data processing unit 52 will control the film cutting drive assembly 41 to drive the cutter 42 to cut the film material 7 according to a preset interval time, that is, the time interval between the completion of the pressing operation and the start of the cutting operation. By setting the interval time, there is a sufficient time interval between the pressing operation and the cutting operation to avoid mutual interference, and to ensure that each operation is performed when the film material 7 is in the correct position, which is beneficial to improving the accuracy and consistency of the operation.

[0035] In some embodiments, the controller 5 of the laminating device provided by this utility model further includes a human-machine interface 53. The human-machine interface 53 is used to receive standard length values ​​and interval times input by the operator, providing an intuitive and convenient operating platform. The human-machine interface 53 may include a touch screen or a button panel input device. The operator can easily input the aforementioned standard length values ​​and interval times. The standard length value refers to the ideal displacement length that the film material 7 needs to achieve, and the standard length value affects the lamination and cutting positions of the film material 7. Through the human-machine interface 53, the operator can input the corresponding standard length values ​​according to the requirements of different battery models to adapt to the coating requirements of battery insulation films of different specifications. The interval time refers to the time interval between the completion of the lamination operation and the start of the cutting operation, and the interval time affects the stability of the lamination operation and the accuracy of the cutting operation. Through the human-machine interface 53, the operator can adjust the interval time according to the characteristics of the film material 7 and the process requirements to optimize the production process. By setting up the human-machine interface 53, greater flexibility and adaptability can be achieved. The operator can adjust the standard length values ​​and interval times at any time according to actual production needs, which is beneficial to improving ease of use and production efficiency. In addition, the human-machine interface 53 can also display information such as the current working status, parameter settings and operation prompts, to help operators monitor the equipment operation in real time, detect and handle abnormal situations in a timely manner, so as to improve the stability of production and product quality.

[0036] In some embodiments, the pressing plate 1 of the film pressing device provided by this utility model includes a support plate 11, on which a support surface 111 is provided. The support surface 111 is parallel to the pressing rod 32, and a stroke detector 2 is installed on the support surface 111. The support surface 111 is a plane on the support plate 11 that can be used to support the film material 7. The support surface 111 is parallel to the pressing rod 32, so that the pressing rod 32 can be parallel to the support surface 111 when pressing the film material 7, and the pressure is evenly distributed on the film material 7. The stroke detector 2 is installed on the support surface 111, so that the stroke detector 2 can detect the displacement length of the film material 7 on a stable platform, reducing the detection error caused by the instability of the installation platform. When the pressure rod 32 approaches the pressure plate 1 under the drive of the pressure mold drive assembly 31, since the support surface 111 and the pressure rod 32 are parallel to each other, the pressure rod 32 can apply uniform pressure to the film material 7, so as to avoid insufficient pressing of the film material 7 or local overpressure caused by uneven pressure, which is conducive to improving the bonding quality of the film material 7 and the battery and reducing the generation of bubbles and wrinkles.

[0037] In some embodiments, the pressure rod 32 has a square cross-section. When driven by the molding drive assembly 31, the square-section pressure rod 32 is less prone to rotation, which improves its directional stability. Simultaneously, the square cross-section provides a larger pressing area, allowing for more uniform pressure to be applied to the film material 7. Furthermore, the surface of the pressure rod 32 is provided with an elastic pad 321, which can be made of silicone or rubber. The elastic pad 321 buffers the impact of the pressure rod 32 on the film material 7, preventing damage due to excessive pressure. It also adapts to minor unevenness on the surface of the film material 7, ensuring even pressure distribution. Additionally, the elastic pad 321 has a certain coefficient of friction, preventing slippage of the film material 7 during pressing, thus improving the accuracy of the pressing position. When the pressing drive assembly 31 drives the pressing rod 32 close to the pressing plate 1, the elastic pad 321 on the surface of the pressing rod 32 will first contact the membrane material 7, and then gradually press the membrane material 7. Because of the buffering effect of the elastic pad 321, the pressure on the membrane material 7 will gradually increase, so as to avoid sudden application, which helps to reduce the deformation and damage of the membrane material 7. At the same time, the elastic pad 321 can adapt to the slight unevenness on the surface of the membrane material 7, so that each contact point can be subjected to appropriate pressure, improving the uniformity and quality of pressing.

[0038] In order to provide a detailed description of the battery film attaching device provided by this utility model, the above embodiments have described a film pressing device in detail. Based on the same inventive concept, this application also provides a battery film attaching device.

[0039] This utility model provides a battery film bonding device, including the aforementioned film pressing device, and may further include a film material 7 supply module and a finished product collection module. The film material 7 supply module, the finished product collection module, and the aforementioned film pressing device work together to provide the battery with a pre-cut film material 7 for which an insulating film is to be bonded. The operator can then bond the pre-cut film material 7 to the battery. For example, the film material 7 is fed into the film pressing device at an appropriate speed and tension through the film material 7 supply module, and the finished product collection module collects the pre-cut film material 7 used for battery insulating film coating and transfers it to the next process for the operator to coat the battery. This facilitates high-quality and high-efficiency bonding of the battery insulating film, improving the automation level of battery production and product quality.

[0040] This utility model provides a battery film attaching device. The displacement length information of the film material 7 is obtained through the stroke detector 2. The pressing mechanism 3 has a pressing drive component 31 mounted on the pressing plate 1. The pressing rod 32 is connected to the pressing drive component 31. The pressing drive component 31 drives the pressing rod 32 to move closer to or away from the pressing plate 1. The film cutting mechanism 4 has a cutting blade 42 for cutting the film material 7 that passes through the pressing rod 32 and the pressing plate 1. The pressing rod 32 is located between the cutting blade 42 and the stroke detector 2. The controller 5 is connected to the stroke detector 2, the pressing drive component 31 and the film cutting drive component 41 respectively. In this way, during the battery insulation film coating process, the travel detector 2 acquires the displacement length information of the film material 7 and transmits it to the controller 5. Based on the received displacement length information, the controller 5 controls the pressing mold drive assembly 31 to drive the adhesive pressing rod 32 closer to the pressing plate 1 to press the film material 7. Then, the controller 5 controls the film cutting drive assembly 41 to drive the cutter 42 to cut the film material 7 that passes between the adhesive pressing rod 32 and the pressing plate 1. This allows for precise detection of the film material 7's displacement length, pressing of the film material 7, and timely cutting of the film material 7, which is beneficial for improving production efficiency and the stability of cutting quality in the battery insulation film coating process, as well as improving the adhesive application quality. Thus, the technical effect of improving production efficiency and the stability of cutting quality in the battery insulation film coating process, and improving the adhesive application quality, is achieved.

[0041] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A film pressing device, characterized in that, The film pressing device includes a pressing plate, a stroke detector for acquiring displacement length information of the film material, a pressing mechanism, a film cutting mechanism, and a controller. The pressing mechanism includes a pressing drive assembly mounted on the pressing plate and a pressing rod connected to the pressing drive assembly. The pressing drive assembly drives the pressing rod to move closer to or away from the pressing plate. The film cutting mechanism includes a film cutting drive assembly and a cutter for cutting the film material passing through the pressing rod and the pressing plate. The pressing rod is located between the cutter and the stroke detector. The controller is connected to the stroke detector, the pressing drive assembly, and the film cutting drive assembly, respectively.

2. The film pressing device according to claim 1, characterized in that, The molding mechanism further includes a first bracket with a first limiting groove and a second bracket with a second limiting groove. The first bracket and the second bracket are respectively mounted on the pressing plate and are arranged at intervals. The first limiting groove and the second limiting groove both extend in a direction close to the pressing plate. One end of the pressing rod passes through the first limiting groove and is connected to the molding drive assembly, and the other end of the pressing rod passes through the second limiting groove.

3. The film pressing device according to claim 2, characterized in that, The film pressing device also includes bushings in the first limiting groove and the second limiting groove, and the bushings are fitted with the pressing rod with a clearance.

4. The film pressing device according to claim 1, characterized in that, The film cutting drive assembly further includes a fixed base mounted on the pressure plate, a film cutting driver mounted on the fixed base, and a guide rail mounted on the fixed base. The push rod of the film cutting driver passes through the fixed base and is connected to the cutter. The cutter is slidably connected to the guide rail.

5. The film pressing device according to claim 1, characterized in that, The stroke detector includes a support frame mounted on the pressure plate and a CCD vision inspection module mounted on the support frame. The CCD vision inspection module is used to monitor the displacement length information of the membrane material in real time.

6. The film pressing device according to claim 1, characterized in that, The controller includes a data receiving unit and a data processing unit. The data receiving unit is used to receive displacement length information acquired by the stroke detector. The data processing unit is used to compare the displacement length information with a preset standard length value. If the displacement length information meets the preset standard length value, the controller controls the pressing mold driving assembly to drive the pressing rod to press the film material onto the pressing plate, and controls the film cutting driving assembly to drive the cutter to cut the film material at preset intervals.

7. The film pressing device according to claim 1, characterized in that, The controller also includes a human-machine interface, which is used to receive standard length values ​​and interval times input by the operator.

8. The film pressing device according to claim 1, characterized in that, The pressing plate includes a support plate with a support surface, which is parallel to the pressing rod, and the stroke detector is installed on the support surface.

9. The film pressing device according to claim 1, characterized in that, The pressure rod has a square cross-section, and its surface is provided with an elastic rubber pad.

10. A battery film bonding device, characterized in that, The battery film attaching equipment includes a film pressing device as described in any one of claims 1 to 9.

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